Diswasher Disposal

I?ve come across some receptacles in new construction that have the diswasher and disposal circuits (both dedicated) on a single receptacle. The breakers have a mutual disconnect but the receptacles are only rated for 120. There is potentially 240 between the hot terminals which leads me to believe this is wrong but it passed the building inspection. Any thoughts?

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Re:
Diswasher Disposal

Each receptacle will be rated and listed for 120v. You can put one, two or even three on a single yoke. Check section RTDV of the UL White Book.

Quote:

Duplex receptacles rated 15 and 20 A that are provided with break-offtabs may have those tabs removed so that the two receptacles may bewired in a multi-wire branch circuit or multiple branch circuits.

A line-to-line fault will still be cleared by a properly-installed overcurrent device.

__________________Chuck Norris can cut through a knife with hot butter.

Re:
Diswasher Disposal

I'm confused. I'm not talking about multiple wires being tied into one receptacle. I'm talking about two dedicated circuits on one receptacle. Code requires those to have a mutual disconnect which in most modern panel leads to opposite phases. Therefore the potential between the hot terminals on the receptacle is 240 or 208 in certain situations. My question is why does that not violate the 120 listing for receptacles?

Re:
Diswasher Disposal

Very good article however I didn?t see any mention of opposite phase circuits on the same device. I agree a duplex device has two receptacles but with two circuits that have a mutual disconnect you?ve got 240 across the hot terminals. The device is not listed for that potential. What am I missing?

Re:
Diswasher Disposal

Quote:

Originally Posted by Hotneutral

Very good article however I didn?t see any mention of opposite phase circuits on the same device. I agree a duplex device has two receptacles but with two circuits that have a mutual disconnect you?ve got 240 across the hot terminals. The device is not listed for that potential. What am I missing?

You're looking at the contact/connection points in the duplex as a pair of contact/connection points, they're not. Each opening/side is an individual contact point. This is no different than 2 single round 120v receptacles in an outlet (box).

Re:
Diswasher Disposal

Quote:

Originally Posted by tjbnwi

You're looking at the contact/connection points in the duplex as a pair of contact/connection points, they're not. Each opening/side is an individual contact point. This is no different than 2 single round 120v receptacles in an outlet (box).

Tom

Same logic applies to a pair of one-pole breakers in the panel.

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